@article{fdi:010096921,
  title = {{L}ong-term organic matter additions increase soil health and rice yield in a tropical paddy soil by enhancing carbon transformation functions},
  author = {{D}o {T}rong, {T}. and {R}umpel, {C}. and {T}ran, {T}. {M}. and {J}ouquet, {P}ascal and {T}houmazeau, {A}. and {T}ran, {T}. {T}. {T}. and {B}ottinelli, {N}icolas},
  editor = {},
  language = {{ENG}},
  abstract = {{A}lthough the importance of organic matter management for sustainable rice production is well established in upland soils, its role in lowland paddy systems with gleyed soils remains less understood. {T}o address this gap, we used a 24-year field experiment in northern {V}ietnam to examine how organic matter inputs in rice-soybean rotations influenced soil health indicators and crop yield. {T}opsoil was collected from six treatments: no fertiliser, mineral fertiliser and mineral fertiliser plus cow manure, each with or without crop residue retention. {C}arbon transformation, nutrient cycling and soil structure maintenance were evaluated using {B}iofunctool, which integrates eight indicators into a soil health index. {S}oil macrofauna communities were also assessed. {L}abile organic carbon was the most sensitive indicator of carbon transformation, increasing more than threefold with organic matter additions compared to the unfertilised control. {O}rganic matter additions also significantly improved macroporosity and water infiltration. {T}he highest nitrate availability occurred under mineral fertilisation combined with residue retention. {O}verall, organic matter inputs increased the soil health index by 22%, exceeding the effect of mineral fertilisation alone, while residue retention increased the index by 8%. {R}ice yield increased from 1.8 to 3.4 t ha-1 corresponding to gains of 67% under mineral fertilisation, 90% with manure addition and 10% with residue retention. {I}n contrast, soil macrofauna communities were unaffected by management practices and showed few relationships with soil functions. {R}ice yield was positively related to the soil health index (rho = 0.80), carbon transformation (rho = 0.75) and structure maintenance (rho = 0.68), whereas its relationship with nutrient cycling was not significant. {T}ogether, these results highlight the importance of long-term organic matter inputs for soil health and rice productivity in gleyed paddy soils, with yield being most strongly associated with carbon transformation.},
  keywords = {flooded agroecosystems ; hydromorphic soils ; soil fauna ; soil multifunctionality ; {VIET} {NAM}},
  booktitle = {},
  journal = {{S}oil {U}se and {M}anagement},
  volume = {42},
  numero = {2},
  pages = {e70198 [12 p.]},
  ISSN = {0266-0032},
  year = {2026},
  DOI = {10.1111/sum.70198},
  URL = {https://www.documentation.ird.fr/hor/fdi:010096921},
}